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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_CONTROLLER_H_
#define CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_CONTROLLER_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/ui/focus_ring_layer.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/focus/widget_focus_manager.h"
#include "ui/views/widget/widget_observer.h"
namespace views {
class View;
class Widget;
}
namespace chromeos {
// FocusRingController manages the focus ring around the focused view. It
// follows widget focus change and update the focus ring layer when the focused
// view of the widget changes.
class FocusRingController : public FocusRingLayerDelegate,
public views::WidgetObserver,
public views::WidgetFocusChangeListener,
public views::FocusChangeListener {
public:
FocusRingController();
virtual ~FocusRingController();
// Turns on/off the focus ring.
void SetVisible(bool visible);
private:
// FocusRingLayerDelegate.
virtual void OnDeviceScaleFactorChanged() override;
// Sets the focused |widget|.
void SetWidget(views::Widget* widget);
// Updates the focus ring to the focused view of |widget_|. If |widget_| is
// NULL or has no focused view, removes the focus ring. Otherwise, draws it.
void UpdateFocusRing();
// views::WidgetObserver overrides:
virtual void OnWidgetDestroying(views::Widget* widget) override;
virtual void OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) override;
// views::WidgetFocusChangeListener overrides:
virtual void OnNativeFocusChange(gfx::NativeView focused_before,
gfx::NativeView focused_now) override;
// views::FocusChangeListener overrides:
virtual void OnWillChangeFocus(views::View* focused_before,
views::View* focused_now) override;
virtual void OnDidChangeFocus(views::View* focused_before,
views::View* focused_now) override;
bool visible_;
views::Widget* widget_;
scoped_ptr<FocusRingLayer> focus_ring_layer_;
DISALLOW_COPY_AND_ASSIGN(FocusRingController);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_CONTROLLER_H_
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